Yellow is a Web3 infrastructure ecosystem designed to enable decentralized clearing, settlement, and cross-chain financial coordination. It is built around a Layer-3 architecture that combines Ethereum-based settlement with off-chain state-channel execution to support real-time, non-custodial transaction processing. YELLOW operates as an ERC-20 token on Ethereum. On top of this base layer, Yellow deploys the Nitrolite protocol, a state-channel framework that allows participants to transact off-chain while preserving the ability to enforce final settlement on-chain. Off-chain transactions are cryptographically co-signed by participants, and disputes can be resolved through on-chain smart contracts. The Yellow Network connects brokers, decentralized applications, liquidity providers, and node operators through a unified clearing framework. Within each state channel, at least one participant operates as a clearnode, providing liquidity routing and blockchain abstraction across supported networks. The ecosystem also includes the Yellow SDK, which allows developers to integrate applications without directly managing state-channel infrastructure.